Amin, S. V., L. Rai, P. Palpandi, and A. Kumaran. “Ever Intriguing ‘Primary Amenorrhea’- an Audit”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 3, no. 4, Feb. 2017, pp. 1090-6, https://www.ijrcog.org/index.php/ijrcog/article/view/2240.